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ES2187819T3 - USE OF DUPLEX ENCRYPTION ALGORITHMS FOR SATELLITE ROADS THAT PRESENT A DELAY. - Google Patents

USE OF DUPLEX ENCRYPTION ALGORITHMS FOR SATELLITE ROADS THAT PRESENT A DELAY.

Info

Publication number
ES2187819T3
ES2187819T3 ES97942486T ES97942486T ES2187819T3 ES 2187819 T3 ES2187819 T3 ES 2187819T3 ES 97942486 T ES97942486 T ES 97942486T ES 97942486 T ES97942486 T ES 97942486T ES 2187819 T3 ES2187819 T3 ES 2187819T3
Authority
ES
Spain
Prior art keywords
station
delay
bits
satellite
decirated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES97942486T
Other languages
Spanish (es)
Inventor
Paul W Dent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson Inc
Original Assignee
Ericsson Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of ES2187819T3 publication Critical patent/ES2187819T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18565—Arrangements for preventing unauthorised access or for providing user protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/34—Encoding or coding, e.g. Huffman coding or error correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/80—Wireless

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

SE DESCRIBE UN APARATO Y PROCEDIMIENTO PARA CIFRAR EL TRAFICO INTERCAMBIADO EN AMBAS DIRECCIONES ENTRE UN SATELITE / TELEFONO CELULAR Y UNA RED DE ESTACIONES EN TIERRA QUE UTILIZAN UN SATELITE ORBITAL. EN LA ESTACION DEL TELEFONO MOVIL, EN LA ESTACION DE LA RED DE TIERRA O EN AMBAS SE DISPONE UNA MEMORIA INTERMEDIA. LA MEMORIA INTERMEDIA SE USA PARA ALMACENAR LA SALIDA DE BITS DE DESCIFRADO DE UN ALGORITMO DESCIFRADO DUPLEX, EN EL MOMENTO EN QUE SE GENERAN LOS BITS DE CIFRADO. LOS BITS DE CIFRADO ALMACENADOS SE USAN PARA DESCIFRAR UN BLOQUE DE INFORMACION DE TRAFICO QUE SE RECIBIRA MAS TARDE. EL RETARDO EN EL USO DE LOS BITS DE DESCIFRADO ALMACENADO SE DETERMINA PARA CADA LLAMADA EN EL MOMENTO DE LA PREPARACION DE LA LLAMADA AL NUMERO ENTERO MAS CERCANO DE PERIODOS DE BLOQUES, POR MEDICION DEL RETARDO DE PROPAGACION DEL BUCLE DESDE LA ESTACION DE TIERRA A LA ESTACION DEL TELEFONO MOVIL DURANTE UN INTERCAMBIO DE SEÑALES AL PREPARARSE LA LLAMADA.AN APPLIANCE AND PROCEDURE ARE DESCRIBED TO ENCRYPT THE TRAFFIC EXCHANGED IN BOTH ADDRESSES BETWEEN A SATELLITE / CELL PHONE AND A NETWORK OF GROUND STATIONS THAT USE AN ORBITAL SATELLITE. IN THE STATION OF THE MOBILE PHONE, IN THE STATION OF THE EARTH NETWORK OR IN BOTH AN INTERMEDIATE MEMORY IS AVAILABLE. THE INTERMEDIATE MEMORY IS USED TO STORE THE DEPARTURE BITS OUTPUT OF A DUPLEX DECIRATED ALGORITHM, AT THE TIME THE ENCRYPTED BITS ARE GENERATED. STORED ENCRYPTION BITS ARE USED TO DESCRIBE A TRAFFIC INFORMATION BLOCK THAT WILL BE RECEIVED LATER. THE DELAY IN THE USE OF THE STORAGE DECIRATED BITS IS DETERMINED FOR EACH CALL AT THE TIME OF PREPARATION OF THE CALL TO THE NEAREST ENTIRE NUMBER OF BLOCK PERIODS, BY MEASURING THE DELAY OF THE LOOP PROPAGATION FROM THE LAND STATION TO THE LAND STATION MOBILE PHONE STATION DURING AN EXCHANGE OF SIGNS WHEN CALLING IS PREPARED.

ES97942486T 1996-10-15 1997-09-19 USE OF DUPLEX ENCRYPTION ALGORITHMS FOR SATELLITE ROADS THAT PRESENT A DELAY. Expired - Lifetime ES2187819T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/731,465 US5825889A (en) 1996-10-15 1996-10-15 Use of duplex cipher algorithms for satellite channels with delay

Publications (1)

Publication Number Publication Date
ES2187819T3 true ES2187819T3 (en) 2003-06-16

Family

ID=24939621

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97942486T Expired - Lifetime ES2187819T3 (en) 1996-10-15 1997-09-19 USE OF DUPLEX ENCRYPTION ALGORITHMS FOR SATELLITE ROADS THAT PRESENT A DELAY.

Country Status (11)

Country Link
US (1) US5825889A (en)
EP (3) EP1089489A2 (en)
JP (1) JP4491073B2 (en)
CN (1) CN1203629C (en)
AU (1) AU4417397A (en)
BR (1) BR9712309A (en)
CA (1) CA2268656A1 (en)
DE (1) DE69717489T2 (en)
ES (1) ES2187819T3 (en)
TW (1) TW384590B (en)
WO (1) WO1998017028A1 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6101255A (en) * 1997-04-30 2000-08-08 Motorola, Inc. Programmable cryptographic processing system and method
US6081600A (en) * 1997-10-03 2000-06-27 Motorola, Inc. Method and apparatus for signaling privacy in personal communications systems
FI107669B (en) * 1998-02-13 2001-09-14 Nokia Mobile Phones Ltd Method and arrangement for encrypting data transmission
US6314290B1 (en) 1998-07-13 2001-11-06 Hughes Electronics Corporation Mobile satellite system and method for implementing a single-hop terminal-to-terminal call
US6216007B1 (en) * 1998-09-29 2001-04-10 Ericsson Inc. Prevention of alteration of location information for mobile-based location calculation
US6516065B1 (en) 1998-11-30 2003-02-04 Hughes Electronics Corporation Method for implementing ciphered communication for single-hop terminal-to-terminal calls in a mobile satellite system
US6353738B1 (en) 1998-11-30 2002-03-05 Hughes Electronics Corporation Method for implementing a terminal-to-terminal call with an optimal use of radio resources in a mobile satellite system
FI111598B (en) * 1999-03-03 2003-08-15 Nokia Corp Method and system for realizing a fast control channel in a cellular radio network
US6529487B1 (en) * 1999-07-09 2003-03-04 Qualcomm Incorporated Method and apparatus for securely transmitting distributed RAND for use in mobile station authentication
DE60024941T8 (en) * 1999-08-31 2006-08-10 Matsushita Electric Industrial Co., Ltd., Kadoma Encryption method and apparatus, decryption method and apparatus
US6980658B1 (en) 1999-09-30 2005-12-27 Qualcomm Incorporated Method and apparatus for encrypting transmissions in a communication system
NO312929B1 (en) * 2000-09-18 2002-07-15 Ericsson Telefon Ab L M Optimized mobile-to-mobile call handling in satellite networks using GPRS / UMTS network architecture
US7436964B2 (en) * 2000-12-19 2008-10-14 At&T Mobility Ii Llc Synchronization of encryption in a wireless communication system
ATE369709T1 (en) * 2002-03-14 2007-08-15 Nxp Bv METHOD FOR ALLOWING COMMUNICATION BETWEEN AT LEAST TWO COMMUNICATION DEVICES
US7095856B2 (en) * 2002-03-29 2006-08-22 Motorola, Inc. Method and apparatus to maintain encryption synchronization in a multi-modulation TDM system
ATE323992T1 (en) 2003-08-15 2006-05-15 Stack Ltd DETERMINATION OF THE ACTIVATION TIME FOR UPWARD DIRECTION ENCRYPTION IN A UMTS SUBSCRIBER DEVICE
EP1657868B1 (en) * 2003-08-15 2007-10-03 Research In Motion Limited Determining uplink ciphering activation time in UMTS user equipment
GB0322683D0 (en) * 2003-09-27 2003-10-29 Koninkl Philips Electronics Nv Data encryption method and apparatus
US7551736B2 (en) * 2004-04-12 2009-06-23 The Directv Group, Inc. Physical layer header scrambling in satellite broadcast systems
US8213553B2 (en) * 2004-04-12 2012-07-03 The Directv Group, Inc. Method and apparatus for identifying co-channel interference
JP5080470B2 (en) * 2005-08-26 2012-11-21 ザ・ディレクティービー・グループ・インコーポレイテッド Method and apparatus for determining a scrambling code for signal transmission
FR2940691B1 (en) * 2008-12-31 2011-02-25 Viaccess Sa METHODS OF TRANSMITTING, RECEIVING AND IDENTIFYING, SECURITY PROCESSOR, AND INFORMATION RECORDING MEDIUM FOR SUCH METHODS.
US8681981B2 (en) * 2010-12-03 2014-03-25 Motorola Solutions, Inc. Method and apparatus for transmitting voice communications related to a multimedia session
KR101457557B1 (en) * 2013-01-18 2014-11-04 연세대학교 산학협력단 Multi-core device, test device and method for diagnosing failure
CN104994213B (en) * 2015-03-19 2018-02-27 数据通信科学技术研究所 Realize the method and system of mobile terminal encrypted word business voice message

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE447859B (en) * 1984-12-10 1986-12-15 Datakonsult I Malmo Ab Encoding and decoding appts.
JPS63151136A (en) * 1986-12-15 1988-06-23 Nec Corp Privacy communication system
SE465797B (en) * 1990-03-07 1991-10-28 Ericsson Telefon Ab L M PROCEDURE TO TRANSFER SYNCHRONIZATION INFORMATION FOR CRYPED TRANSFER IN A MOBILE RADIO SYSTEM
US5390245A (en) * 1990-03-09 1995-02-14 Telefonaktiebolaget L M Ericsson Method of carrying out an authentication check between a base station and a mobile station in a mobile radio system
JP3005245B2 (en) * 1990-05-30 2000-01-31 日本電気株式会社 Encryption device
US5081679A (en) * 1990-07-20 1992-01-14 Ericsson Ge Mobile Communications Holding Inc. Resynchronization of encryption systems upon handoff
US5091942A (en) * 1990-07-23 1992-02-25 Ericsson Ge Mobile Communications Holding, Inc. Authentication system for digital cellular communications
US5230003A (en) * 1991-02-08 1993-07-20 Ericsson-Ge Mobile Communications Holding, Inc. Decoding system for distinguishing different types of convolutionally-encoded signals
US5414729A (en) * 1992-01-24 1995-05-09 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing
JPH05327694A (en) * 1992-05-21 1993-12-10 Nec Corp Ciphering system in star type satellite communication network
JPH0738606B2 (en) * 1992-10-30 1995-04-26 日本電気株式会社 Satellite communication system
US5528693A (en) * 1994-01-21 1996-06-18 Motorola, Inc. Method and apparatus for voice encryption in a communications system

Also Published As

Publication number Publication date
EP1089487A2 (en) 2001-04-04
US5825889A (en) 1998-10-20
DE69717489T2 (en) 2003-07-10
CA2268656A1 (en) 1998-04-23
WO1998017028A1 (en) 1998-04-23
EP0943195B1 (en) 2002-11-27
BR9712309A (en) 1999-08-31
JP2001502495A (en) 2001-02-20
TW384590B (en) 2000-03-11
CN1437330A (en) 2003-08-20
EP0943195A1 (en) 1999-09-22
EP1089489A2 (en) 2001-04-04
CN1203629C (en) 2005-05-25
JP4491073B2 (en) 2010-06-30
AU4417397A (en) 1998-05-11
DE69717489D1 (en) 2003-01-09

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